Dynamic modelling, simulation and control of a grinding circuit

CIM Bulletin, Vol. 73, No. 821, 1980

H.W. SMITH and D. GUERIN, Department of Electrical Engineering and Department of Metallurgy and Materials Science, University of Toronto, Toronto, Ontario

This paper describes the development of a dynamic model for a full-scale (64 tonnes/hr) grinding circuit consisting of an open-circuit rod mill feeding a ball mill operating in closed circuit. The object of constructing such a model is to investigate the static and dynamic behaviour of potential control schemes. Model selection, data processing and parameter estimation are discussed, and static and dynamic results of simulations are presented. Conclusions are drawn with regard to the adequacy of the model for such studies, and likely limitations on control of such circuits.
Keywords: Modelling, Simulation, Control, Grinding circuits, Rod mills, Ball mills, Mill parameters, Cyclones, Data processing.